Power-control device



July 24, 1928. 1,678,595

G. H. HINES POWER CONTROL DEVICE Filed Nov. 29, 1927 '7 Sheets-Sheet l IH IIIHH] [1H ii! Illll E l July 24, 1928.

G. H. HINES POWER CONTROL DEVICE '7 Sheets-Sheet 2 Filed Nov. 29, 1927 ri I July 24, 1928,- 1,678,595

G. H. HINES POWER CONTROL DEVI CE Filed NOV. 2?, 1927 '7 Sheets-Sheet 3July 24, 1928. 1,678,595

G. H. HINES POWER CONTROL DEVICE Filed Nov. 29, l92 '7 '7 Sheets-Sheet 4July 24, 1928.

G. H. H!NES POWER CONTROL DEVICE '7 Sheets-Sheet 5 Filed Nov. 29., 192'?wmvm/a July 24, 1928.

G. H. HINES POWER CONTROL DEVICE 7 Sheets-Sheet 6 Filed NOV. 29, 1927July 24, 1928. 1,678,595

G. H. HINES POWER CONTROL DEVICE Filed Nov. 2 9, 1927 '7 Sheets-Sheet 7llllllllllllilllllll lllll llHlllll llll UNITED STATES PATENT OFFICE.

GAIL I-I. HINES, OF LANSING, MICHIGAN.

POWER-CONTROL DEVICE.

Application filed November 29, 1927. Serial No. 236,571.

The principal. object of the invention is to provide a simplepowencontrol device whereby to vary automatically the ratio of speedtransmission in two aligned shafts.

Another object of the invention is to provide a power-control deviceemployed as a flywheel, preferably a motor-flywheel, to he operativelyused. in connection with a friction or centrifugal clutch installedhetwec. the de ice and the load.

it further object of the invention is to incl u do means whereby toquickly disconnect or render inoperative certain c .ments of the dev ceto allow easy towing of an autou'iohile.

And still another object is to cim iloy ecscnt-ial elements of thedevice a CQi'ltlIilifUf 1l clutch. to gradually connect the drivingpower to the load-carrying elements.

ln general it is my aim to set forth these and certain otherin'iprovemcnts and re n'ients which I have invented to elahor upon theparticular powmr-control do forth in my application for .lietters Patefiled Feb. 2. 192'? and having Serial J 165.410? to which I refer youfor more complete information reeardingr the basic idea upon which ismade the improvements here in set forth.

Furthermore this specification in fl'GTlGl'fil is intended to containsuhstantilly the same iasic l of principles as set .orth in my applicatA?! for Letters l7atent on power-control devices lileo Sept. H. 1.927,and having rial No. 218,831, and because of more complete disclosureherein this application is takingthe place of the aforesaid applicationfiled Sept. 10, 1927.

The annexed drawings and following description set forth. in detail.certain mechanisms embodying the invention, such dis closed meansconstituting. however. but few of the various mechanical forms in whichthe principle of the invention ay he used.

In sa d annexed drawinn's:-.' re 1 is side elevational view. in part ation and in part a. vertical section. showing simple emhodiment of myimproved device. Fig. 2 is a sectional view taltcn on line PlT-l?l of 1.Fl 3 is a view similar to Fig. 1 showing; a more elaborate emhodimentincluding; means to combine my improvements with a worm-drive axle andsup;- 'csting the use of silent type is a sectional view taken li el?-l? of F.

Fig. 5 is an auxiliary view showing an equivalent form of pawlarrangement in lieu of the form and arrangement of parts 703 and 705shown in Fig. l of the drawings. F 6 is a sectional view showinganequiva lent form of toothed, annular ring employed to be i'noved intoand out of engagement with. the coasting pawl-levers in lieu of thefixed toothed ring shown under symbol 705 in Fig. 3, and is manipulatedto he moved forward and backward by means of rods R3 projecting thru theso as shown, and is employed in lieu of the removable key 2E shownlockthe worm shaft to the worm thereon in j 3. Fig. 7 is an auxiliaryview showing an equimlent form and arrangement of means to movecentrifugal weights as employed in my device. Fig. 8 is an auxiliaryview of equivalent construction showing centrifugal weigzfhts moved byeccentrics inal with the drum 1S employed to vary H. ation of the drum.Fig. 9 is a side view, in part a side elevation and in part a verticalsection showing; a modified form of my oevice wherein I employ a spiralplanet-gem in mesh. with the driving and driven gear and anautomatically actuating pawl carried in. the c or housing of my deviceand suggesting an arrangement whereby the centrifugal weights areoscillated inst centrifugal resistance as well as re proc ated againstcentrifugal resistance. Fig. 1.0 is a sectional. view taken on line B-Bof Fig. f). Fig. 11 is a sectional. view taken on line C@ of 9. Fig. 12av sectional view taken on line A.l. of Fig: 9. 12 is frag mentary sideview in part a side elevation and in part a vertical section showing amodified form and arrangement of constructing a planetary differe ial.erear-asscmhly as employed in mv (.lQVl 0 who .ein I use an internal ill. is a sectional view taken. on line D of 1.3. Fig. 15 is view similari 13 wher in I employ hevcl 9;..1rs. l ig. 16 is a sectional view takenon line EE of Fig. 15. 17 is a fragmentary side view in part a sideelevation and in part a vertical section showing a modified forn'i andarrangement of elements wherein I employ gears in lieu of cams .urifugalweights against centrifnce as employed in my device. is a sectional viewtaken on line .A of 17. F 10 a view similar to Fig. 17 in which I show aduplex elliptical cam employed to move weights against centrifugalresistance, said cam having fixed connection with the drum or carrier ofthe planet-gear. Fig. 20 is a section taken on line BCBC of Fig. 19.Fig. 21 is a top view, in part a plan view and in part a horizontalsection showing how to employ centrifugal weights in positive connectionwith the carrier of the planet-gear to be moved against centrifugalresistance by means of a cam fixed to the driven shaft or load-carryingelement. Fig. 22 is a sectional view taken on line BIL-BE of Fig. 21.Fig. 23 is a side view, in part av vertical section and in part a sideelevation showing how obvious it is that the planet-gear carrier may bemounted on either the driving or driven shaft, or on both said shafts 1and 2, especially illustrating the unbalanced planetgears 16, and inparticular showing forms and arrangements of elements whereby acentrifugal clutch is provided to gradually pick up and carry the loadincluding illustration of a second load shaft 2L carrying a radiallymovable, variably elliptical cam 26L. Fig. 2 1 is a section taken online BF-BF of Fig. 23. 25 is a section taken on line BI-IBI-I of Fig.23. Fig. 26 is a side view, in part a vertical section and in part a.side elevation showing a complete assembly of my invention of which moredetailed views of the several mechanisms are illustrated in theforegoing figures, and especially in Figs. 9, 10, 19, 21 and 23, andshowing the embodiment to which my claims especially refer.

Inasmuch as certain mechanisms in my device are, generally, made up oftwo like parts arranged symmetrically in pairs I may hereinafterindicate like parts, thusly arranged, as being plural but designated bythe same single. symbol.

Referring to the drawings, shafts 1 and 2 are journaled in alignment forrelative rotat-ion, one to the other, in the case 85A. The gear 17 isfixed to the shaft 1 and the gear 14 is fixed to the load-carrying ordriven shaft 2. Adjacent to and rearward of the gear 17 the drum orplanet-gear carrier 18 is loosely mounted on the driving shaft 1,preferably; however, the drum 18 may be carried thusly by the drivenshaft 2, or it may be carried on both the driving and driven shaftswhich have relative rotation with respect to the drum 18. In the drum 18are journaled the countershafts 24 and disposed to revolve about theaxis of the aligned shafts 1 and 2. Fixed on the forward ends of theshafts 2d are the planet-gears 16, referring to the constructionillustrated in Figs. 1 and 3 of the drawings; however, when employingspiral planet-gears as illustrated in Fig. 9 the axis of each gear 16will be disposed transversely withrespect to the axis of the drivingshaft 1 and the special arrangement shown in 9 will be hereinafter morespecifically referred to and as an example for illustration I may selectthe construction shown in Fig. 3 of the drawings, in which the gears 1.6are in mesh with the driving 17. Fixed on the rear ends of the shafts 2iare the gears 15 which are in mesh with the driven gear 1 1-. Insuitable recesses formed receding inward from the peripheral surface ofthe drum 18 are swingingly carried the pawl-levers 703 disposed so thatthe short ends '1' 03E will be formed to extend beyond the periphery ofthe drum 18 when caused to function thusly perforce of suitable springsacting between the drum and the pawl-levers. The long ends of thepawl-levers carry suitable weights disposed to be acted upon bycentrifugal force to draw the short ends 703E of said pawl-levers withinthe periphery of the drun'i 18. A series of teeth 705 disposed arrangedin annular form about the inside of the case 85A is adapted to beengaged by the pawl-levers 703 wh-n the short ends 703E of saidpawl-levers are projected beyond the periphery of the drum 18. Disposedbetween the drum 18 and the gear 14 are located the diametricallyopposed eccentrics 1E and 1F formed integral with or fixed to thedriving shaft 1. Centrifugal weights 77B are loosely mounted upon theeccentrics 1E and 1F and may be carried upon plain bearings as shown inFig. 1 or upon ball bearings as shown in Fig. 3. Guide studs 76B arefixed to the gear 1 1 projecting therefrom transversely forward thrusuitable guide slots formed in the weights 7713 so that said weights mayreciprocate radially but must revolve about the axis of the driven shaft2 at the same speed as the gear 14 rotates. The shaft 2 may be employedas the worm-shaft in a worm driven axle of an automobile. A key 2Ehaving a rectangular cross section may engage the keyway of the worm-2Hand project rearwardly and diagonally thru a suit-ably disposed slot inthe shaft 2 formed fittingly to receive the key 2E. When in operativeposition the key 2E is held thusly by means of a pin 2F passing thruboth the key and the shaft 2. A portion of the key 2E is projectedrearwardly beyond the rear extremity of the shaft 2 and suitably formedto be easily and quickly extracted by means of some tool ordinarilycarried in the kit.

An oil slinger 14S may be secured in any ordinary manner to the gear 14to be rotated therewith, and troughs as are commonly used may be securedto the sides of the case 85A to adequately distribute oil to the workingparts.

A series of notches may be annularly formed on the drum 18 and disposedto be engaged by a manually operated bolt 18B rcciprocatively carriedprojecting thru the case A, or substituted for said bolt I may employ amanually operated pawl or a clutch hand or clutch shoe or the like.

In the operation and use of my improved device the driving shaft 1 isgradually clutched to the motor and then rotates at crankshaft speeddriving th 17 transmitting power thru the reduction gears 16, 15 and 1.1 to the driven. shaft 2. For example we may consider tl e deviceen'iployed operating in an automobile. In starting the car from rest atfirst the resistance torque in the driven shaft 9- is great and thelesser driving torque in the shaft 1 is transmitted thru the reductiongears and moves the car slowly forward. The great resistance torquetends to rotate the drum 18 in a retrograde direction relative to therotation of the shafts 1 and 2; but, the drun is prevented fromreversing because of the pawls T03 locked with the teeth T05 encircledin the case 85 1. Each rotation of the d riving shaft 1 gained over thedriven shaft 2 completes a cycle of reciprocative movement of thecentrifugal weights 773 which are dircctl and pesitvely operator bymeans of the diametrically opposed eccentrics 1E and 1? integral withthe shaft 1. i i hile the car is moving slowly the work ofIGClTH'OCiLtlIIg the weights 'ZZB has a slight braking effect upon themotor; however, inasmuch as this braking effect is transmitted directlyfrom the driven shaft 2 to the driving shaft 1 there is always a directimpelling force n'oportionate to the work of reciprocating or mov ingthe weights 7TB against centrifugal resistance. Centrifugal forcedrawing the weights 77B is proportionate to the speed of the vehicle,and as the car gains speed there is greater direct impelling force whichrelieves the gears of part of their work and the drum 18 begins rotatingfrom impetus created by journal friction of the countershafts 2 1effecting a succession of intermediate speeds until the speed is reachedwhen it is impossible to reciprocate the weights 77B against theterrific centrifugal force and the car is in high gear with the wholeassem bly rotating at crankshaft speed.

It is to be noted that the speed necessary to maintain the vehicle inhigh gear depends upon the resistance torque as well as the speed of thevehiclev The c evice may function in high while driving a car at fivemiles per hour on a level pavement, whereas a speed of ten miles perhour may he necessary to maintain high gear in deep However it is clearthat the vehicle will, under all conditions of road or load, he drivenat a speed which utilizes the motor power in a highly efficient manner.

When the drum 18 rotates centrifugal force causes the weighted long endsof the pawl-levers 703 to be thrown outward drawing the short ends 703Einward that they der low centrifu,,al resistance. Ordinarily the drum 18is thin y locked to the ease 85A but for a few moments after which thedrum 18 begins rotating principally because its cam shaped hub does thework of moving the weights 7713 against centrifugal resistance. Theresistance torque permitting, the drum 18 rotates faster relative to thegear 14: as the centrifugal force increases and a succe. sion ofintermediate gear ratios is effected until the whole planetary assemblyrotates as a unit at motor crankshaft speed.

When the pawl-levers 703 and the teeth 705 made entirely of metal therewill sometin'ics be produced a slight, metallic, clicking sound when thedrum 18 rotates so slowly that the centrifugal force is inadeouate tocarry the pawl-levers free and clear of the teeth 705. To prevent thismetallic noise I attach to the pawls a facing 703* of some suitablenon-metallic material such hard felt, vulcanite, or compositiondovetailed in or secured in any ordinary manner.

lVhen a reversing mechanism is employed located at the forward end ofthe shaft 1 I suggest locking the drum 18 by means of the manuallyoperated bolt 18B, whereas added reduction in the reversing gears willeasily move the vehicle while the weights are re ciprocated under lowcentrifugal force.

It will he noted that the arrangement of the pawls 703 is such that thevehicle is easily towed forwaro; however, to easily tow the car backwardit is necessary only to pry the key 213 backward out of engagement withthe worm 2H; or, n lieu of this special arrangement the constructionshown in 6 may be employed to move the teeth 705 out of operativeengagement with the pawls.

VJhen elements of my device are formed and arranged as shown in 9 of thedrawings it will be obvious that the oneation is substantially the sameas here? he ore described; and in view of this it will ed that a spiralgerr 17 fixed to the c1 7 or m shaft 1 is in mesh with and drives a spi.al planet-gear 16 mounted on a countershaft 2 yournaled for rotation inthe drum 1 i8, and will be noted that but one of these planet-gears isnecessary, however it is preferable to have a pair of them, as shown,and the spiralv planet-gears 16 mesh with the internal spiral gear M totransmitpower to rotate the gear 14 in the same direction as the gear17. The driven shaft 2 is formed enlarged at its forward end and securedto the gear 14 in a manner as shown, or in any common or usual way, tocarry the centrifugal weights 77B reciprocatively mounted and disposedto rotate with the shaft 2 and at thesame speed of rotation as the gear1 in revolutions per minute. The weights 77B are in ball bearing contactwith the eccentrics 1E 1F fixed to the driving shaft 1. lnasn'iuch asthe shaft 1 is journaled for rotation relative to the driven shaft 2 ashereinbefore stated the weights 77B are reciprocated when the shaft 1gains a rotation over the shaft 2 and the force required to accomplishthe movement of said weights against centrifugal resistance varies withthe speed of rotation of the gear 1 1 and shaft 2. It will be obviousthat the size of the centrifugal weight 7713 may be lessened byrelatively increasing the diameters of the countershafts 24. and thebearings in which they are ournaled, by reason of the fact that suchresistance against rotating the shafts 2a in the drum 18 produces a moredirect driving effect impelling the drum to rotate as is the function ofthe weights 77B. Hence, I may desire to employ such most suitablebalance or relation, which is obvious, further, by reason of the factsthat for e ch counter-shaft in the case of the larger diameter eachpoint of frictional resistance is relatively farther from its gearfulcrum which is the center or axis of the respective shaft 24, saidfriction point moves faster in a given number of revolutions per minute,and there are more points of frictional resistance. On the drum 18 teethare formed in annular series disposed to be engaged by a pawl 703suitably hinged in the case A. Fixed to the pawl 703 may project aresilient finger in frictional contact with the front face of the drum18 and disposed so that a slight for vard relative rotary movement ofthe drum 18 will swing said finger and disengage the pawl 703 from anyconta-t with the teeth formed on the drum 1S, and a slight retrograderotation of the drum will move the pawl 703 into locked relation withsaid teeth. A thun'ibscrc v is carried threaded thru the case 85A and ofa disposition to be manually turned thru the case against a suitablesurface of the pawl 703 to unlock said pawl from engagement with theteeth formed on the drum 18 and to hold said pawl in such disengagedposition.

The planetgear 16 may have its rim on one side disposed radially fromits axis formed thicker and heavier than on the side diametricallyopposite to provide a centrifugally operating mass in eccentricunbalance relative to the axis of said planet-gear. This feature aloneincorporated in the gear assembly provides a centrifugally operatinggovernor to control the speed of revolution of the planet-gear and isespecially useful in lieu of the centrifu al clutch hereinbeforedescribed as employed to gradually vary the ratio of speed transmissionby offecting variable rotation in the drum. And in ope 'ation when Iemploy this unbalanced planet-gear as a centrifugally operating means tocontrol. the speed of revolution of the planet-gear the entire rotatingassembly is employed as a motor flywheel and the friction or centrifugalclutch used to pick up the load is installed between my device and theload, and it will be clea that when the assembly is rotating 2 aflywheel the centrifugal action on the pair of unbalanced planet-gearswill tend to hold the heavier sides farthest radially outward withrespect to the axis of the drum, then if I engage the clutch the heavyinitial resistance torque will cause the planet-gears to be" i rotatingand to slaclien in speed of lQ.'Oilil1iOl1 and the kinetic energy in thedrum affords support to the gear fulcrum. l urthermore this unbalancedplanet-gear feat re may well be used in conjunction with the centrifugalclutch hereinbefore described. And in this combination I may employ thearrangement of elements shown in Figs. 19 and 20, in which the duplexcam is ellipti al in form and is fixed to the drum 18. Each weight ispivoted in a fixed element of the driven shaft 2 and in a similar manneras shown in 7 of the drawings. hen the driven shaft 2 is rotated bymeans of the of gears of which the gear 14 is fixed to the driven shaft2 the weights 77B are revolved about the axis of said shaft and moverelative to the drum 18 and its elliptical cam until centrifugal forceexerts sufhcient resistance against the movement of the weights to bringthe drum 18 into rotation equal to the speed of rotation of the drivenshaft 2. It will be obvious that the work of oscillating the weights 77Beven before active centrifugal force is generated offers to impel thedrum 18 to rotate, so that it is clear that if I *ish to employ thefriction clutch between my device and the motor I may employ any one orall of the means to control the speed of revolution of the planet-gears,such means including countershaft journal frictiom unbalancedplanet-gears, (or this unbalanced mass carried eccentrically relative tothe axis of tie countershaft 2e and specifically mentioned as beingintegral with the planet-gear may be any sucn mass thusly carriedanywhere in fixed connection with the countershaft) and centrifugalweights moved against centrifugal resistance by means of a cam or othermeans of which others are herein described.

Another means to move weights against centrifugal resistance is shown in17 of the drawings, in which a set of go rs is employed with a gear 113Gfixed to the driving i ii) shaft 1 and each other gear lFG is fixed toits corresponding weight 773, the gear llilG being in mesh with eachgear PEG to revolve each weight about a pivot which is the axis of itscorresponding gear. 'lhru one half of a revolution each weight revolvedagainst centrifugal resistance when the weights are also being revolvedabout the axis of the shaft 2. Each weight is journaled in the enlargedfront end of the driven shaft 2 and thus makes operative connection withthe driving shaft 1.

In lieu of the spiral gears shown in Fig. 9 I may arrange and form theelements to employ the planetary assembly shown in Fig. 13 in which thedriven gear 1 1 is an internal spur gear; or I may employ bevel gears asshown in Fig. 15.

As illustrated in Fig. 19 I may wish to use a. spring 77S for thepurpose of constantly bearing each weight 7715 into operative relationwith the cam. employed to move the weight against centrifugalresistance, and this is especially desirable to insure that relation ofweight and cam when the centriii'ugal force acting upon the weight isnot opcratively effective.

I do not wish to confine myself to the carrying of the weightsparticularly on the en semble on and including the driven shaft for asshown in Figs. 21 and 22 it will be clear that 1 may have an operatingdevice with tile centrifugal weights carried by the ensemble on andincluding the driving shaft with. means to reciprocate or move againstcentrifugal resistance said weights; and referring to Fig. 21 it will benoted that when the construction shown in Fig. 9 is modified so that theelements are formed and ar ranged as in Fig. 21 l. carry a cam in fixedconnection with the driven shaft 2 to move the weights 77B agaii'ist(jQlltllfllQlll resistance, and that the weights are pivoted in the drum18 on respective shafts S2. The elli titical, duplex cam, the 1d and theshaft 2 are shown integrally formed; however. these may be formedseparately and se cured together in ordinary manner. The rollers R1 andE2 mounted on the rear, studded ends of the weights 771% may be freelycarried on roller or ball bearings to approach minimum friction whiletraveling the elliptical race or cam under higl'i centrifugal pressure.The smaller rollers have a slight clearance from any contact with theirperiphery when the 'hts 77B are actuated under operative centrifugalpressure but may come in contact with the elliptical hub 2G to limit themovements of the weights 7713 when there is no centrifugal. pressure.This arrangement of elements 18 tioned, the pawls 703 may be omittedfrom the construction and other factors hereinbefore mentioned reliedupon to govern the speed of revolution of the planet-gears. However, ifI attach a friction clutch to be employed to gradually connect the motorto the device 1 may employ the pawls 708 to prevent retrograde movementof the drum 18, then in operation when the drum is at rest and the shaft2 is rotating the weights 7715 are being oscillated giving impulse tothe drum until it in turn rotates and generates centrifugal pressure togradually lock the drum to the driven shaft 2. It will be obvious thatif 1 omit the pawl 703 from the construction and clutch the motor to theshaft 1 the resistance torque in the shaft 2 may be of a magnitude suchas to cause retrograde movement of the drum 18, however, tion of thedrum generates centrifugal pressure in the weights to check the movement of the drum and produce a tendency to rotate in the direction ofthe driving shaft 1, and under certain conditions of torque thisarrangen'ient may function as a perfect working device.

A centrifugal clutch such as I have illustrated and described in myapplication for Letters Patent filed Feb. 2, 1927, and having Serial No.165,407, may be employed to advantage for use in gradually connectingthe power to the load, and this type of clutch is especially desirablewhen my device is employed as a motor flywheel and the clutch for pickinup the load is installed between the shaft 2 and a more remoteload-carrying element. Such a centrifugal clutch may be modified oemploy a form of cam and arrangen'ient of centrifugal weightssubstantially the same as shown in Fig. 21 of the drawings annexed tothis specification, however the elliptical race of the cam will vary sothat the major and minor axes of the ellipse will gradually become morenearly equal until the race will be annular thru a section nearest theelement 18 whi h carries the centrifugal weights as is particularlyillustrated in 23, 2 1-, and 25, and when employing a flange and yoke orother ordinary means to move the cam radially away from or toward theelement 18 and the gears omitted from the construction and having theelement 18 fixed to the shaft 1 which is piloted into the shaft 2 itwill be obvious that I then have a working centrifugal clutch togradually pick up and carry the load, and in this construction the shaft1 will be the shaft 2 of power-control device.

lVhile in certain mechanisms of my de- '*ice I have shown elementsformed and arranged in pairs it will be understood that I do not wish toconfine myself to the use of a plurality of these elements thuslyarranged: however it is preferable to employ a pair of the centrifugalWeights to maintain a perfeet balance, yet it will be obvious that theconstruction shown in Fig. 9 is workable with one planet-gear 16.

While 1 have illustrated and described fair working examples of myimprovements 1 do not wish to be understood as limiting myself to thespecific details of construction and formation of the elements shown, asunder the spirit of my invention I believe that l am entitled to employa wide variation of detail such as may fall within the scope of theapg'iended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a device of the class described, the combination oi? a drivingshaft, a load-carrying driven shaft, a planetary differential.gear-assembly positively connecting the driving shaft to said drivenshaft, planetgear revolution control means, clutch mean operativelyconnecting the ensemble on and including the driving shaft to theensemble on and including the driven shaft, the former ensemblecomprising the drivii shaft, the planetgear and the arricr in which saidplanet-gear is jour aled for rotation as well as carried for revolutionabout the drivin shaft, and the in driving connection with the drivingshaft and the planet-gear, the latter ensemble comprising theload-carrying driven shaft and the gear secured thereon, said clutchmeans including acentrifugally operating weight free to be moved a ainstcentrifugal resistance and in positive connection with one of said ensembles and means in positive connection with the other ensemble to movesaid weight against centrifugal resistance whereby to vary gradually theratio of speed transmission.

2. In a device of the class described, the combination of a drivingshaft, load-carrying driven shaft, a planetary dil'ferentialgear-assembly positively connecting the driving shaft to the drivenshaft, said gearassembly including a gear-carrying element mounted onone of the shafts for relative rotation to said shafts, a spiral gearconcen trio-ally connected to the driving shaft, a spiral gearconcentrically connected to the driven shaf a spiral planet-geariournaled for rotation in said gear-carrying element and in mesh withthe aforesaid gea s, means to control the revolution of the planohgear,and automatically actuating clutch means operatively connecting thedriving and driven shafts whereby to vary gradually the ratio of speedtransmission.

3. In adevice of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a gear-assembly operativelyconnecting the driving and driven shafts, said gear-assembly including agean carrying element loosely mounted on one of the shafts for relativerotation to the shafts, one of the gears concentrically connected to thedriving shaft and another concentrically connected to the driven shaft,clutch means operatively connecting the ensemble on and including thedriving shaft to the ensemble on and includin the driven shaft, theformer ensemble comprising the driving shaft, the planet-gear and thecarrier in which said planet-gear is journaled for rotation as well ascarried for revolution about the driving shaft, and the gear in drivingconnection with the driving shaft and the planet-gear, the latterensemble comprising the load-carrying driven shaft and the gear securedthereon, said clutch means including centrifugally operating weight freeto be moved against *entrifu al resistance and in positive connectionWith one of said ensembles and means in positive connection with theother ensemble to move said weight against centrifugal resistancewhereby to. vary gradually the ratio of speed transmission, a case, saidensembles journaled for rotation in the case, lock means acting betweensaid gear-carrying element and the case to prevent rotation of thegear-carryelement, and means to lock and unlock said locl; means.

l. In a device of the class described, the combination of a drivingshaft, a load-carryi j driven shaft, a gear-assembly operatively conncting the driving and driven shafts, said gear-assembly including agearcarrying element loosely mounted on one of the shafts for 'elativerotation to said shafts, one of the gears concentrically connected tothe driving shaft and another concentrically connected to the drivenshaft, clutch means opcratively connecting the ensemble on and includingthe oriving shaft to the ensei'nble on and including the driven shaft,the forme' ensemble comprising the driving shaft, the planet-gear andthe carrier in which said planet-gear is journaled for rotation as wellas carried for revolution about driving shaft, and the gear in drivingconnection with the driving shaft and the planet gear, the latterensemble comprising the loa carrying}: driven. shaft and the gearsecured thereon, said clutch means including a centrifugally ope;ingweight iiee t be moved against centri ugnl resistance and in positiveconnection with one of isembles and means in posi ive conn c ,n with theother :emhle to move said w ight against centrifugal resistance wherebyto vary gradually the ratio of speed transmission, a case, saidensembles lift) the pawl and projecting into :trictionif cont totes inone dire c. out oi in L when the n and to carry the pawl arnent with theseries of teeth car-cs r ing element rotates in the other dire tion.

5. In it dw of the class dcscrlhed, h combination of ii driving shaft,9. loadcer ryin driven sn g'eznr-eseeinhi opera; tively connecti thedriving rd drive e shafts, said "l'-2 ssen'ihly inchulinga.gearczzrrying c ement loosely mounted on one of said sl "re rotation tothe shafts, one oi the genre C(PllCGllLi nectei'l to the driving; icontricnlly connector clutch ineens opere i. l I

enable on and including the drivin shaft to the enscn'ihle on and inclucdriven shirlt, the former cnscinlile con'iprising the driving shaft, theplzii'iet-geer and the cer rier in which snid plulietour journuled "forrotation as well e czirril for lfi'v'fillliilfili about the drivingshaft, and the gear in driving connection with the driving shaitt andthe plenetgesr, the otter eilseinhle con'ipris.ing, the londcerflvingdriven shiflt and the our secured thereon, Said clutch lit 1' lin means:1 centri'li. vl y op .tmg ht nioved against centrifugal nuance and inpziisitive connection with one of Sfild ens-:einhies and menus 111positive connection. with the other cnsen'ihle to move suid weightagainst centrifug; resistance here to very gradually the ratio ofinnission, :1 case. satin enscrnhlcs 'ootion in the case, :uitoinuti- 1al iii-cons acting" between lcrient end the case to geni cerryingg' clelv ier ino jerzitive said sziid prove 1 i nient. and menus to rent lockmeans.

(5. in n device of the class described, the conih n: tion of ii drivino;shat-1;, ii lond-cnrrying driven slni'i't, gem-2i.sseinhlv operatii'elyconnecting; drivii'ig' rind driven including it siiizf'l'e, said gear-il gem; car i elen'ie'z'it l mounted on one o; the sh: tor rcletrverotation to snid shzi'l'ts, one of the re "iacntriczilly connccled tothe drivi centric-idly connected to the clutch nieznis operzitivclyi-onoozt U tile seinhle on and including driving}; shnit will to theensen'ihle on and imxluoingr the dri shaft, the former enseinlxc coni'irising; the driving; slni'it, the plnnetq 'enr and the rier in whichsaid planet-gear is journsled for rotation as w ill as ca ried forrevolution about the driving: and

driving connection w and the plenet-grear, coniprising 'tl e llozicoczirr in thereon, ssid clntc up; n ceutrifugnlly operating h.novod against centrifugal i mo in positive connection with saide'nscn'ihles and means in positive ion "-w'ith the other ensemble tomove 1 said Weight against centrifugal resistance whereby to very grannelly the ratio 01" speed trensnn or a case, said ensen'ihles journziledfor rotation in the case, automuth czillv rictunted locl; ineeustoprevent rotattion of the cnr-cerrying element, said loc means c ini,':-1...\in at pewl. pivoted in the case. to engage a series of teethformed on the gear-carrying elen'iont and e linger fixed to the pawl andprojecting into frictional cont: ct with the geei cerr ing element tocarry hear zip vi table portion of the pawl. 7. In :1 device of theclass described, the combination of ii drivingshalt, e load-carryingdriven shaft, a gear-assembly operat-ively connecting the driving anddriven siinl'ts, said gear-nssen'ihly including o gem carrying elementloosely mounted on one of the shafts tor relut ve rotution to saidsliziitts, on of the gears concentrically connectcd to he drivii'iggshaft and zinotner concentrically i clutch niezins operativelyconnecting the ensenihle on and including the driving shalt to the ishalt, the "(inner ensen'ible comprising the driving shaft, theplsnehgcnr and the cnr rier in which said planet-gear is jourunlcdrotation as well as carried for revolution t the driving: and the gezrin .ig connection wite the driving rhinitand the planet-gem, he latterensemble con prising the loud-czirrying driven shaftand the gearsecureiil thereon. said elu'ch means including; a contriiiingrnllyope'utin r wei 'ht tree to he moved against centrifugal resistance andin positive connection with said enscni les and menus in positiveensemble on and including the dri en grear-cnrryi 1;; element and thecase to Mint rotation 01 t ,QQill' Cllll'lVlnQ elemanual] operated lockmeans a. l between tl e case and the gmir-cm'rynip; element.

Tu i l 1 n ,I l o. o oesciioed, tne

. coin nation or it driving shaft, e loed-c rrying driven shaft, aplanetary differential gear-assembly positively connecting the drivingshaft to said driven shaft, an unbalanced planet-gear having acentrifugal mass eccentrically located with respect to the axis of saidgear to govern the speed of rotation of the planet-gear, means to governthe speec of revolution of said gear including a centrifugally operatingweight free to be moved against centrifugal resistance and in positiveconnection with the ensemble on and including the driven shaft and meansin positive connection with the ensemble on andincluding the drivingshaft to move said weight against centrifugal resistance whereby to varygradually the ratio of speed transmission, said first mentioned ensemblecomprising the load-carrying driven shaft and the gear secured thereon,and the last named ensemble comprising the driving shaft, theplanet-gear and the carrier in which said planet-gear is journaled forrotation as well as carried for revolution about the driving shaft, andthe gear in driving connection with the driving shaft and theplanet-gear.

9. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differential.

gear-assen'ibly positively connecting the driving shaft to said drivenshaft, an unbalanced planet-gear having a centrifugal mass eccentricallylocated with respect to the axis of said gear to control the speed orrotation of the planet gear whereby to vary gradually the ratio of speedtransmission, and frictionally actuated means acting automatically toprevent retrograde revolution of the planet gear.

10. In a device of the class described, the

combination of a. driving shaft, a load-carrying driven shaft, aplanetary differential gear-assembly positively connecting the drivingshaft to said driven shaft, means to con trol automatically therevolution of the planet-gear, a countershaft carrying the planet-gearand having a suitable portion of its length journaled rotation inbearings having a diameter proportionate to the diameter of saidplanet-gear to afford sufficient resistance to rotation to cause saidplanet-gear to revolve when the resistance torque in the driven shaft islight and to rotate when the resistance torque in the driven shaft isheavy, clutch means operativoly connecting the ensemble on and includingthe driving shaft to the ensemble on and including the driven shaft, theformer ensemble comprising the driving shaft, the planet-gear and thecarrier in which said planet-gear is journaled for rotation as well ascarried for revolution about the driving shaft, and the gear in drivingconnection with the driving shaft and the planet-gear, the latterensemble comprising the load-carrying driven shaft and the gear securedthereon, said clutch means including a centrifugally operating weightfree to be moved against centrifugal resistance and in positiveconnection with one of said ensembles and means in positive connectionwith the other ensemble to move said weight against centrifugalresistance whereby to vary gradually the ratio of speed transmission. I

11. In a device of the class described, the combination of a. drivingshaft, a load-carrying driven shaft, a planetary differentialgear-asscmbly positively connecting the driving shaft to the drivenshaft, an unbalanced planet-gear having a centrifugal masseccentricz-illy located with respect to its axis to control the speed ofrotation of the planetgear, clutch means operatively connecting theensemble on and including the driving shaft to the enseniible on a dincluding the driven shaft, the former ensemble comprising the drivingshaft, the planet-gear and the carrier in which said planet-gear isjournaled for rotation as well as carried for revolution bout thedriving shaft, and; the gear in driving connection with the drivingshaft and the planet-gear, the latter ensemble comprising theload-carrying driven shaft and the gear secured thereon, said clutchmeans including a centrii'iugally operating weight free to be movedagainst centrifugal resistance and in positive connection with one ofsaid en.- sembles and means in positive connection with the otherensemble to move said weight against centrifugal resistane whereby tovary gradually the ratio of speed transmission, and automaticallyactuating means to prevent retrograde revolution of the planet gear.

12. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assembly positively connecting the driving shaft to the drivenshaft, an unbalanced planet-gear having a centrifugal mass eccentricallylocated with respect to its axis to control the speed of rotation ofsaid planetgear, clutch means operatively connecting the ensemble on andincluding the driving shaft to the ensemble on and including the drivenshaft, the former ensemble comprising the driving shaft, the planet-gearand the carrier in which said planet-gear journaled for rotation as wellas carried for revolution about the driving shaft, and the gear indriving connection with the driving shaft and the planet-p ar, thelatter ensemble comprising the load-carrying driven shaft and the gearsecured thereon, said clutch means includinga centrifugally operatingweight free to be noved against centrifugal resistance and in positiveconnection with one of said ensembles and means in positive connectionwith the other ense-n'ible to move said weight against centrifugalresistance whereby to vary gradually the ratio of speed transmis sion,automatically actuating means to prevent retrograde revolution of theplanet-gear; and manually operated means to prevent retrograderevolution of said planet-gear.

13. In a device of the class described, the combination of a driving shft, a load-carrying driven shaft, a planetary differential n1aras emblypositively connecting the driving sh: t to the driven shaft, anunbalanced planet-gear having a centrifugal mass eccentrically locatedwith respect to its axis to control the speed of rotation of said planetgear, clutch means operat-ively connecting the ensemble on and includingthe driving shaft to the ensemble on and including the driven shaft, theformer ensemble comprising the drivin shaft, the planet-gear and thecarrier in which said planct gear is journaled for rotation as well ascarried for revolution about the driving shaft, and the gear in drivingconnection with the driving shaft and the 'ilanct-gear, the latterensemble compns ing the load-carrying d rivcn shaft and the gear securedthereon, said clutch means in cluding a centrifugally operating weightfree to be moved against centrifugal resistance and in positiveconnection with one of said ensembles and means in positive connectionwith the other ensemble to move said weight against centrifugalresistance whereby to vary gradually the ratio of speed transmission,automatically actuating means to prevent retrograde revolution of theplanet- 51621.1, and means to render inoperative said last named means.

14:. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assembly positively connecting the drivshaft to the driven shaft,an unbalanced planet-gear having a centrifugal mass ccccntricallylocated with respect to its axis to control the speed of rotation ofsaid planet gear, clutch means operatively connect-in the ensemble onand including the driving shaft to the ensemble on and including thedriven shaft, the former ensemble con'iprising the driving shaft, theplanet-gear and the carrier in which said planet-gear is journaled forrotation as well as carried for revolution about the driving shaft, andthe g r in J ing connection with the driving sl .ft and the planet gear,the latter ense 'lble comprising the h d -carryiug driven shaft and thegear thereon, said clutch means including a ccntrifugally operatingweight free to be moved against cemrifugalresistance and in positiveconnection with one of said enscn'ibles and means in positive connectionwith. the other ensemble move said: weight against centrifugal reistance whereby to vary gradually the ratio of speed transmis sion, andmeans to prevent retrograde revolution of the planet-gear, said lastnamed means comprising a series of teeth annularly formed. on thecarrier of said planet-gear and concentric with the driving shaft, acase in which said carrier is journaled for rotation, a pawl pivoted inthe case to engage with said series of teeth and a finger fixed to! thepawl and projecting into frictional contact with said carrier to swingsaid pawl into engagement with said series of teeth when the carrierbegins rotating in a retrograde direction.

15. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assemliily positively connecting the driving shaft to the drivenshaft, an unbalanced planet gear having a centrifugal mass eccentricallylocated with respect to its axis to control the speed of rotation ofsaid planet gear, a countershaft carrying the planetgear and having asuitable portion of its length journaled for rotation in hearings havinga diameter proportionate to the di-alncter of said! planet-gear toafford sufficient resistance to rotation to cause said planetto revolvewhen. the resistance torque in the driven shaft is light and to rotatewhen the resistance torque in the driven shaft is heavy, clutch meansoperatively connecting the ensemble on and including the driving snaf-tto the ensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid planet-gear is journaled for rotation as well as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally operating weight free to bemoved against centrifugal resistance and in positive connection with oneof said ensembles and means in positive connect-ion with the otherensemble to move said weight against centrifugal resistance whereby tovary gradually the ratio of speed transmission.

16. Inca device of the class described, the combination of a drivingshaft, a load-carry ing driven shaft, a planetary differentialgear-assembly positively connecting the driving shaft to the drivenshaft, clutch means operatively connecting the ensemble on and includingthe driving shaft to the ensemble on and including the driven. shaft,the former ensemble comprising the driving shaft, the planet-gear andthe carrier in which said planet-gear is journaled for rotation well ascarried for revolution about the driving shaft, and the gear in drivingconnection with the driving shaft and the planet-gear, the latterensemble comprising the load-carrying driven shaft and the gear securedthereon, said clutch means including till a centrifugally operatingweight free to be moved against centrifugal resistance and in positiveconnection with one of said ensembles and a cam in positive connectionwith the other ensemble to move said weight against centrifugalresistance whereby to vary gradually the ratio of speed transmission,and means to prevent retrograde revolution of the planet-gear.

17. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assembly positively connecting the driving shaft to the drivenshaft, clutch means operatively connecting the ensemble on and includingthe driving shaft to the ensemble on and including the driven shaft, theformer ensemble com n'ising the driving shaft, the planet-gear and toecarrier in which said planet-gcar is jonrnaled for rotation as wellcarried forrevolution about the driving shaft, and the gear in drivingconnection with the driving shaft and the planet-gear, the latterensemble comprising the load-carrying driven shaftand the gear securedthereon, said clutch means including a centrifugally operating weightfree to be moved against centrifugal resistance and in positiveconnection with one of said ensembles and a cam in positive connectionwith the other ensemble to move said weight against centrifugalresistance whereby to vary gradually the ratio of speed tra ismission,automaticall actuating means to prevent retrograde revolntion of theplanetgear, and means to render inoperative said last named means.

18. In a device of the class described, the combination of a drivingshaft, a load-arrying nriven shaft, a planetary diffi-erentialgear-asseinbly positively connecting the driving shaft to the driven saft, clutch means operatively connecting the ensemble on and includingthe driving shaft to the ensemble on and including the driven shaft, theforn'ier ensemble comprising the driving shaft, the planetgear and thecarrier in which said planet-gear is journaled for rotation as well ascarried for revolution about the driving shaft, and the gear in drivingconnection with the driving shaft and the planet-gear, the litterensemble comprising the load-carrying driven shaft and the gear securedthereon, said clutch means includi 1g a centrifugally operating weightfree to be moved against centrifugal resistance and in positiveconnection with one of said ensembles and a cam in positive connectionwith the other ensemble to move said w-ight against centrifugalresistance whereby to any gradually the ratio of sped transmission, andmeans to prevent retrograde revolution of the planet-gea said last namedmeans c mprising a series of teeth annularly formed on the carrier ofsaid planet-gear and concentric with the driving shaft, a case in whichthe carrier is journalcd for rotation, a pawl pivoted in the case toengage with said series of teeth and a linger lined to the pawl andprojecting into frictional contact with said carrier to swing said pawlinto engagement with said series of teeth when the planet-gear begins torevolve in a retrograde direction.

19. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a differential planetarygear-assembly positively connecting the drivin g shaft to the drivenshaft, said gearaF-sembly including a gear carrier mounted on one of theshafts or relative rotation to the shafts, soiral gear concentricallyconnected to the driven shaft, a spiral gear concentrically connected tothe driving shaft, a spiral planet-gear journaled for rotation in saidgear carrier and in mesh with the aforesaid gears, clutch meansoperatively connecting the ensemble on and including the driving shaftto tl e ensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planetgear and the carrier in whichsaid planeti is journaled for rotation as well as 'ed for revolutionabout the driving shaft, and the gear in driving connection with thedriving shaft and the planet-gear, the la 1' ensemble comprising theload-cariven shirt and the gear secured thereon, said clutch meansincluding a centrifugally operating weight free to be moved againstcentrifugal resistance and in positive connection with or of saidensembles and means in positive connection with the other ensemble tomove said weight against centrifugal re once whereby to vary gradrallythe ratio of speed transn'iission, and means to prevent retrograderevolution of the lanet-gear.

20. In a device of the class described. the combination of a 'vingshaft, a loathcarrying driven shaft, a goal-assembly positivelyconnecting the driving shaft to the driven heft, said r-assemblyincluding a carrier mounted on one of the shafts for relative rotationto said shafts, a spiral gear concentrically connected to the drivingshaft, spiral gear concentrically connected to the driven shaft, aspiral planet-gear journal-ed for rotation in said gear carrier and inmesh with the aforesaid gears, clutch means operatively coni'lecting theensemble on and including the driving shaft to the ensemble on andincluding the driven shaft. the former ensemble comprising the drivingshaft, the planet gear and the carrier in which said planet gear isjournaled for rotation as well as carried for revolution about the lshaft, and the gear in driving connection with the driving shaft and theplanet-gear, the latter ensemble comprising [iii the loadcarrying drivenshaft and the gear secured thereon, said clutch means including acentrifugally operating weight free to be moved against centrifugalresistance and in positive connection with one of said ensembles andmeans in positive connection with the other ensen'ible to move saidweight against centrifugal resistance whereby to vary gradually theratio of speed transmis sion, automatically actuating means to preventretrograde revolution of the planetgear, and means to render inoperativesaid ast named means.

521. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a gear-assembly positivelyconnecting the driving shaft to the driven shaft, said gear-assemblyincluding a gear carrier mounted on one of the shafts for relativerotation to said shafts, a spiral gear concentrically connected to thedriving shaft, a spiral gear concentrically connected to the drivenshaft, a spiral planet-gear journaled for rotation in said gear carrierand in mesh with the aforesaid gears, clutch means operativelyconnecting the ensemble on and including the driving shaft to theensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid pia: etrar is journaled for to tation as well. as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear, the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally operating weight free to bemoved against centrifugal resistance and in positive connection with oneof said ensembles and means in positive connect-ion 'ith the otherensemble to move said weight agains it centrifugal resistance whereby tovary gradually the ratio sped transmission, automatically actuatingmeans to prevent retrograde revolution of said planetgear, and manuallyoperated means to prevent retrograde revolution of said planetgear.

$32. in a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a gear-assembly positivelycom'iecting the driving shaft to the driven shaft, said gear-assemblyincluding a gear carrier mounted on one of the shafts for relativerotation to said shafts, aspiral gear concentrically connected to thedriving shaft, a spiral gear concentrically connected to the drivenshaft, a spiral planet-gear joiiirnaled for rotation in said gearcarrier and in mesh with the aforesaid gears, clutch means operativelyconnecting the ensemble on and including the driving shaft to theensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid planetgear is journaled for retaton well as carried for revolutionabout the driving shaft, and the gear in driving connection with thedriving shaft and the planet-gear, the latter ensemble comprising theload-carrying driven shaft and the gear secured thereon, said clutchmeans includ in a centrifugally operating weight free to be movedagainst centrifugal resistance and in positive connection with one ofsaid ensembles and means in positive connection with the other ensembleto move said weight against centrifugal resistance whereby to anygradually the ratio of speed transmis sion, and means to preventretrograde revolution of the planet-gear, said last named meanscon'iprising a series of teeth annularly formed on the carrier of saidplanet-gear and concentric with the driving shaft, a case in which saidcarrier is journaled for rotation, a pawl pivoted in the case to engagewith said series of teeth and a linger fixed to the pawl and projectinginto frictional contact with said carrier to swing said pawl intoengagement with said series of teeth when the carrier begins retrograderotation.

23. In a device of the class described, the combination of a drivingshaft, a load-carry: ing driven shaft, a gear-assembly positivelyconnecting the driving shaft to the driven shaft, said gear-assemblyincluding a gear carrier mounted on one of the shafts for relativerotation to said shafts, a spiral gear concentrically connected to thedriving shaft, a spiral gear concentrically connected to the drivenshaft, a spiral planet-gear journalcd for rotation in said gear carrierand in mesh with the aforesaic gears, clutch means operativelyconnecting the ensemble on and including the driving shaft to theensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid phnet-gcar is journaled for rotation as well. as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear, the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally ope 'ating weight free to bemoved against centrifugal resistance and in positive connection with oneof said ensembles and a cam in positive connection with the otherensemble to move said weight against centrifugal resistance whereby tovary gradually the ratio of speed transmission, and means to preventretrograde revolution of the planet-gear.

24;. in a device of the class described residing in a variable torque,motor flywheel and clutch, the combination of a driving shaft, aload-carrying driven shaft, a planetary differential gear-assemblypositively lill lilti- Crl connecting the driving shaft to the drivenshaft, clutch means operatively connecting the ensemble on and includingthe driving shaft to the ensemble on and including thedriven shaft, theformer ensemble comprising the driving shaft, the planet-gear and thecarrier in which said planet-gear is jour: naled for rotation as well ascar 'ied for revolution about the driving shaft, and the gear in drivingconnect-ion with the driving shaft and the planet-gear, the latterensemble comprising the load-carrying driven shaft and the gear securedthereon, said clutch means including a centrifugally operating weightfree to be moved against centrifugal resistance and in positiveconnection with one of said ensembles and means in positive connectionwith the other ensemble to move said weight against centrifugalresistance whereby to vary gradually the ratio of speed transmission,said combination formed to be employed as a motor flywheel. and clutchmeans to gradually connect the aforesaid load-carrying shaft to a moreremote load carrying element.

25. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assembly operatively connecting the driving shaft to the drivenshaft, means to control the revolution of the planet-gear, clutch meansoperatively connecting the ensemble on and including the driving shaftto the ensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid planet-gear is journaled for rotation as well as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear, the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally operating weight free to bemoved against centrifugal resistance and in positive connection with theensemble on and including the driven shaft, and a cam fixed to theplanet-gear carrier to move said weight against centrifugal resistancewhereby to vary gradually the ratio of speed transmission.

26. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assembly operatively connecting the driving shaft to the drivenshaft, means to control the revolution of the planet-gear, clutch meansoperatively connecting the ensemble on and including the driving shaftto the ensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid planet-gear is journaled for rotation as well as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear, the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally operating weight free to bemoved against centrifugal resistance and in positive connection with oneof said ensembles and a cam in positive connection with the otherensemble to move said weight against centrifugal resistance whereby tovary gradually the ratio of speed transmission, and a roller rotativelycarried on a suitable shaft-like portion of the weight and operating inrolling contact with the cam.

27. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgear-assembly operatively connecting the driving shaft to the drivenshaft, means to control the revolution of the planet-gear, clutch meansoperatively connecting the ensemble on and including the driving shaftto the ensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planet-gear and the carrier in whichsaid planet-gear is journaled for rotation as well as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear, the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally operating weight free to bemoved against centrifugal resistance and in positive connection with oneof said ensembles and a duplex cam in positive connection with the otherensemble to move said weight against centrifugal resistance whereby tovary gradually the ratio of speed transmission, said cam having aninternal race and an external race between which operates a roller whichis rotatively carried on a suitable shaft-like portion of the weight tohave rolling contact with one of the cam races.

28. In a device of the class described, the combination of a drivingshaft, a load-carrying driven shaft, a planetary differentialgearassembly operatively connecting the driving shaft to the drivenshaft, means to control the revolution of the planet-gear, clutch meansoperatively connecting the ensemble on and including the driving shaftto the ensemble on and including the driven shaft, the former ensemblecomprising the driving shaft, the planetgear and the carrier in whichsaid planet-gear is journaled for rotation as well as carried forrevolution about the driving shaft, and the gear in driving connectionwith the driving shaft and the planet-gear, the latter ensemblecomprising the load-carrying driven shaft and the gear secured thereon,said clutch means including a centrifugally operating weight free to hemoved against centrifugal resistance and in positive connection with oneof said ensembles and a duplex cam in positive connection with the otherensemble to move said weight against centrifugal resistance whereby tovary gradually the ratio of speed transmission, said cam having aninternal race and an external race between which operates a pair ofrollers 1'0- 10 tatively carried on a suitable shaft-like portion of thecentrifugal weight so that one roller of said pair may have rollingcontact with the internal race and the other roller of said pair haverolling contact with the external race.

Signed at Lansing, in the county of Ingham and State of Michigan, this16th day of November, 1927.

GAIL H. HINES.

